The park's population of Indo-Pacific humpback dolphins is unique for their distinct pink coloration, which deepens with age.
The limestone formations within the park are part of the same geological system that features prominently in the nearby Khao Sam Roi Yot National Park.
The park covers a diverse range of ecosystems, including evergreen forests, mangroves, and coral reefs.
The coastal water chemistry in this section of the Gulf of Thailand is significantly influenced by freshwater runoff from local estuaries, creating a specific habitat for the park's resident dolphins.
Hat Khanom - Mu Koh Thale Tai National Park spans 316 square kilometers, encompassing both terrestrial forests and marine environments along the Gulf of Thailand coast. The park protects rare pink dolphins (Sousa chinensis), which are frequently spotted in the shallow coastal waters near the park's estuaries. Its geography includes limestone karst formations, hidden lagoons, and secluded beaches such as Hat Nern Thale and Hat Nai Phlao. The park maintains several offshore islands, including Koh Wang Nai and Koh Wang Nok, accessible via local long-tail boats. Mangrove forests serve as essential nurseries for marine life and are protected within the park boundaries. Visitors can access panoramic viewpoints overlooking the Nakhon Si Thammarat coastline from the park's inland mountain trails. The area is characterized by its relatively low tourist density compared to neighboring islands like Koh Samui.
The elevated viewpoint at Khao Phlai Dam for a wide-angle perspective of the coastline and offshore islands.
Hire a local boat operator from the Laem Prathap pier to increase your chances of spotting pink dolphins during the calm early morning hours.
Bring biodegradable sunscreen to protect the fragile coral reef ecosystems within the protected marine zones.
Carry a dry bag for electronics, as boat trips to the offshore islands involve frequent transfers from local piers.
Avoid visiting during the monsoon season (October to December) when sea conditions are often too rough for boat tours to the offshore islands.
Boat services to offshore islands may be suspended at short notice during heavy weather or high wave warnings.
Maintain a respectful distance of at least 50 meters from dolphins when boat viewing; do not feed wildlife; dress modestly when visiting the park headquarters.
